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57872-62-5

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57872-62-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57872-62-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,8,7 and 2 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 57872-62:
(7*5)+(6*7)+(5*8)+(4*7)+(3*2)+(2*6)+(1*2)=165
165 % 10 = 5
So 57872-62-5 is a valid CAS Registry Number.

57872-62-5Relevant articles and documents

Synthesis of potential impurities of cefalexin and cefradine

Hendrix,Roets,Bervoets,Thomas,Pijcke,Busson,Janssen,Hoogmartens

, p. 215 - 219 (1994)

The synthesis of some impurities of the cephalosporin antibiotics cefalexin and cefradine is described. These impurities which may be present in commercial samples are formed during the semi-synthetic preparation of these antibiotics or upon their degradation. The preparation of these compounds enables the validation of selective quantitative analytical methods, such as column liquid chromatography and thin layer chromatography.

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